Constant velocity moments problem

[Ry122]

If a something is rotating about an axis with a constant velocity is the sum of the acting moments 0 since no acceleration is occuring?
Moment = mass x acceleration x distance
If acceleration is 0, the moment is 0.
Is this correct?

 

[foxjwill]

I'm assuming that by acting moment you mean torque, in which case yes, that is correct.